The map shows quakes of M1.5 and up from the last 90 days, the 1 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 3 earthquakes of M1.5 or bigger were recorded within 100 km of Alton, the biggest of them M2.5. The biggest quake on record near Alton — records go back to 1980 — was the M4.0 of Nov 18, 2021, 02:53 UTC: 7 km S of Williamsville, Missouri.
Latest earthquakes near Alton
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M2.2 | 7 km NNW of Salem, Arkansas | Nov 01, 2026, 09:10 PM | 4 km | 50 km SW |
| M2.1 | 2 km E of Mountain Home, Arkansas | Oct 25, 2026, 07:46 PM | 11 km | 94 km WSW |
| M2.5 | 4 km SW of Thomasville, Missouri | Oct 14, 2026, 08:31 AM | 2 km | 16 km WNW |
| M2.4 | 14 km SE of Ellsinore, Missouri | Sep 17, 2026, 04:36 PM | 0 km | 71 km ENE |
| M1.9 | 2 km N of Strawberry, Arkansas | Jul 28, 2026, 10:18 AM | 4 km | 79 km S |
| M1.7 | 3 km NW of Mount Pleasant, Arkansas | Jul 26, 2026, 10:36 AM | 4 km | 86 km SSW |
| M1.8 | 3 km NW of Mount Pleasant, Arkansas | Jul 20, 2026, 03:43 AM | 2 km | 87 km SSW |
| M2.4 | 4 km WNW of Mount Pleasant, Arkansas | Jul 20, 2026, 03:40 AM | 1 km | 88 km SSW |
| M2.1 | 3 km NW of Mount Pleasant, Arkansas | Jul 19, 2026, 08:28 PM | 4 km | 86 km SSW |
| M2.2 | 3 km N of Strawberry, Arkansas | Jul 13, 2026, 11:18 PM | 11 km | 78 km S |
Earthquakes per year near Alton (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
What the last year looked like near Alton
Every quake of M1.5 or bigger within 100 km over the last year — 36 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 1 biggest earthquakes on record near Alton (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.0 | 7 km S of Williamsville, Missouri | Nov 18, 2021, 02:53 UTC | 80 km |
Nearby places
Thayer, MO (23 km) · Winona, MO (36 km) · West Plains, MO (41 km) · Cherokee Village, AR (45 km) · Van Buren, MO (48 km)
USGS data fetched Nov 03, 2026, 18:45 UTC · page built Nov 03, 2026, 18:45 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.